Shooting timer.

One of my brothers friends asked if he could design and build a shooting timer. My brother like challenges and the result is the shooting timer shown on this page. The shooting timer can be used during shooting practice in the disciplines:
1) 25 meter standard pistol,
2) 25 meter sport pistol and
3) Terrain pistol.
Below you can see some pictures of the design (click on the picture to enlarge it):

Updated! Here is the very requested schematic, finally :-)
The shooting timer empty PCB.
The shooting timer PCB. Updated! to the firmware version 9 with these enhancements: 1) Instead of using pause commands to control the time in the program, it now uses timer interrupts 2) Default values for the timer interrupt are located in the internal eeprom. These values can be adjusted to obtain higher accuracy 3) Category 3, discipline 1-3, can be changed by the user to others shooting intervals. The shooting parameters are located in the internal eeprom		Pcb file updated 2010.01.17.
The shooting timer manual. Updated! to version 9.
New! Excel spreadsheet you can use to calibrate the interrupt routine.
Standard 10 seconds training file, you can play on e.g. your iPod.
Standard 20 seconds training file, you can play on e.g. your iPod.
Standard 150 seconds training file, you can play on e.g. your iPod.
Sport precision training file, you can play on e.g. your iPod.
Sport duel training file, you can play on e.g. your iPod.
Terrain 8 seconds training file, you can play on e.g. your iPod.
Terrain 10 seconds training file, you can play on e.g. your iPod.
Terrain 12 seconds training file, you can play on e.g. your iPod.

This page was last updated 2010-02-17.